208470397 has 2 divisors, whose sum is σ = 208470398. Its totient is φ = 208470396.

The previous prime is 208470391. The next prime is 208470403. The reversal of 208470397 is 793074802.

208470397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (208470391) and next prime (208470403).

It can be written as a sum of positive squares in only one way, i.e., 115906756 + 92563641 = 10766^2 + 9621^2 .

It is a cyclic number.

It is not a de Polignac number, because 208470397 - 2²⁷ = 74252669 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208470391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104235198 + 104235199.

It is an arithmetic number, because the mean of its divisors is an integer number (104235199).

Almost surely, 2^208470397 is an apocalyptic number.

It is an amenable number.

208470397 is a deficient number, since it is larger than the sum of its proper divisors (1).

208470397 is an equidigital number, since it uses as much as digits as its factorization.

208470397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 208470397 is about 14438.5039737502. The cubic root of 208470397 is about 592.9455278052.

The spelling of 208470397 in words is "two hundred eight million, four hundred seventy thousand, three hundred ninety-seven".